[MC-137563] Horses become invisible when equipped with horse armor

The bug

When you equip a horse with any type of horse armor, the horse becomes invisible.

How to reproduce

Equip a horse with any type of horse armor.
→ Horse becomes invisible.

Game output

Couldn't render entity
h: Registering texture
	at dha.a(SourceFile:76)
	at dcm.a(SourceFile:28)
	at dcm.a(SourceFile:13)
	at dcb.d(SourceFile:90)
	at dcy.a(SourceFile:225)
	at dcy.a(SourceFile:166)
	at ddd.a(SourceFile:41)
	at ddd.a(SourceFile:16)
	at dca.a(SourceFile:390)
	at cpf.a(SourceFile:153)
	at cpe.a(SourceFile:62)
	at coo.a(SourceFile:79)
	at cpe.a(SourceFile:71)
	at cxp.a(SourceFile:795)
	at cjj.c(SourceFile:817)
	at cjj.a(SourceFile:380)
	at net.minecraft.client.main.Main.main(SourceFile:144)
Caused by: java.lang.IllegalArgumentException: (65, 0) outside of image bounds (64, 64)
	at dgl.a(SourceFile:177)
	at dgl.b(SourceFile:253)
	at dgs.a(SourceFile:50)
	at dha.a(SourceFile:60)
	... 16 more

Note from Oval: If this happens to you, don't attack the horse. It will either make your screen black or another (transparent) color (for example: transparent red happened to [Mod] tryashtar).